Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial Assets:
Securities	$ 872,903	$ 879,571
Other Equity Securities	34,940	33,942
Carrying Amount
Financial Assets:
Cash and Short-Term Investments	397,198	377,244
Securities	872,903	879,571
Loans Held for Sale	77	835
Loans - Net	5,047,674	4,952,371
Cash Value of BOLI	100,056	96,478
Other Equity Securities	34,940	33,942
Total	6,452,848	6,340,441
Financial Liabilities:
Deposits	5,572,750	5,248,790
Borrowings	430,346	635,073
Total	6,003,096	5,883,863
Total Fair Value
Financial Assets:
Cash and Short-Term Investments	397,198	377,244
Securities	872,903	879,571
Loans Held for Sale	77	835
Loans - Net	4,933,670	4,849,503
Cash Value of BOLI	100,056	96,478
Other Equity Securities	34,940	33,942
Total	6,338,844	6,237,573
Financial Liabilities:
Deposits	5,567,623	5,243,326
Borrowings	408,524	613,464
Total	5,976,147	5,856,790
Total Fair Value | Level 1
Financial Assets:
Cash and Short-Term Investments	397,198	377,244
Securities	0	0
Loans Held for Sale	0	0
Loans - Net	0	0
Cash Value of BOLI	0	0
Other Equity Securities	0	0
Total	397,198	377,244
Financial Liabilities:
Deposits	0	0
Borrowings	0	0
Total	0	0
Total Fair Value | Level 2
Financial Assets:
Cash and Short-Term Investments	0	0
Securities	838,609	850,756
Loans Held for Sale	77	835
Loans - Net	0	0
Cash Value of BOLI	100,056	96,478
Other Equity Securities	0	0
Total	938,742	948,069
Financial Liabilities:
Deposits	0	0
Borrowings	408,524	613,464
Total	408,524	613,464
Total Fair Value | Level 3
Financial Assets:
Cash and Short-Term Investments	0	0
Securities	34,294	28,815
Loans Held for Sale	0	0
Loans - Net	4,933,670	4,849,503
Cash Value of BOLI	0	0
Other Equity Securities	34,940	33,942
Total	5,002,904	4,912,260
Financial Liabilities:
Deposits	5,567,623	5,243,326
Borrowings	0	0
Total	$ 5,567,623	$ 5,243,326